ApplicationHA-initiated reboot works independently of high availability provided by VCS installed in the virtualization infrastructure layer. It is not intended to replace VCS in the infrastructure layer. It is useful in cases where there is a need to first bring down other healthy applications and dependent components before actually restarting the managed LPAR.

ApplicationHA-initiated reboot complements VCS in the infrastructure layer by offering an additional layer of control that helps in building customized application management and recovery plans in virtualization environments. ApplicationHA-initiated reboot can co-exist with VCS in the infrastructure layer. You can configure both ApplicationHA-initiated reboot and VCS in the infrastructure layer as part of your recovery plan. ApplicationHA-initiated reboot can act as the first line of action against application failures. If a graceful restart does not resolve the application failures, then depending on the reboot configuration settings, ApplicationHA stops the application heartbeat and VCS in the infrastructure layer then takes control of the managed LPAR.